NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1336548627 PA-C
Verify on CMS → Nathaniel Retrum, PA-C
Medical Physician Assistant in Antigo, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,580 in Medical Physician Assistant, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 327 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
90%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
77/100
▼ 6 pts below national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Nathaniel Retrum, PA-C reported a CMS MIPS final score of 77/100 - below the 83.1 national average - and filed 2,225 Medicare Part D claims in 2023.
- 77/100
- MIPS score · -6 vs avg
- 2K
- Part D claims, 2023
- 90%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Nathaniel Retrum, PA-C's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
77 21st percentile higher than 21% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Nathaniel Retrum, PA-C sits
This provider among medical physician assistant peers
Across the 7,339 medical physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Nathaniel Retrum, PA-C writes more Part D claims than 88% of them and scores higher on MIPS quality than 21% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one medical physician assistant peer from a representative sample of 60; the gold marker is Nathaniel Retrum, PA-C. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Nathaniel Retrum, PA-C?
Below national averagePrimary specialty
Medical Physician Assistant
Medicare Part D claims
2,225 107% vs specialty avg
MIPS final score
77/100 6.1 pts vs avg
Specialty distribution in Wisconsin
How Medical Physician Assistant compares to other specialties among Wisconsin providers
Medicare quality performance, MIPS
Nathaniel Retrum, PA-C's 2023 MIPS final score plotted against the Medical Physician Assistant national average
- MIPS Final Score
- 77/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Medical Physician Assistant) - 77/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Nathaniel Retrum, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 110 E 5TH AVE, Antigo, WI, 54409, with a listed phone of (715) 623-2351. NPI 1336548627 was issued on 08/22/2014.
Medicare Part D records for calendar year 2023 show 2,225 prescription claims written by this provider, covering 327 Medicare beneficiaries and totaling roughly $193K in drug spend, split 9% brand-name and 90% generic by claim count, with an opioid prescribing rate of 4.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 77/100 for the 2023 performance year (Quality 90.5, Cost 25.2), compared with the national average of 83.1.
Medical Physician Assistant is a mid-sized specialty nationwide, with 40,580 enrolled providers across 55 states and an average of 1,077 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1336548627 |
|---|---|
| Specialty | Medical Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 08/22/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
76.9526
Final Score
Avg: 83.1
90.5283
Quality
25.227
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Nathaniel Retrum, PA-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Langlade Hospital - Hotel Dieu OF St Joseph OF Antigo Wisconsin
Antigo, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Nathaniel Retrum, PA-C - brand share 9.0%
Medical Physician Assistant average
9% brand-name claims vs 90% generic, on 2,225 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,225
Total Claims
$193K
Total Drug Cost
327
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,149
- Total Day Supply
- 150,009
- Brand vs Generic
- 9% brand / 90% generic
- Brand Drug Cost
- $152K
- Generic Drug Cost
- $40K
- Opioid Claims
- 89 (4.0% rate)
- Antibiotic Claims
- 60
Patient Demographics
- Average Patient Age
- 70.2 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 42% female / 58% male
- Age Distribution
- <65: 67, 65-74: 154, 75-84: 78, 85+: 28
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nathaniel Retrum, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
153 claims
- Lisinopril
Lisinopril
87 claims
- Amlodipine Besylate
Amlodipine Besylate
75 claims
- Pantoprazole Sodium
Pantoprazole Sodium
69 claims
- Simvastatin
Simvastatin
65 claims
- Metformin Hcl 60
Metformin Hcl
60 claims
- Losartan Potassium 59
Losartan Potassium
59 claims
- Sertraline Hcl 59
Sertraline Hcl
59 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 153 |
| Lisinopril | 87 |
| Amlodipine Besylate | 75 |
| Pantoprazole Sodium | 69 |
| Simvastatin | 65 |
| Metformin Hcl | 60 |
| Losartan Potassium | 59 |
| Sertraline Hcl | 59 |
| Levothyroxine Sodium | 55 |
| Omeprazole | 54 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Physician Assistant Overview
How Nathaniel Retrum, PA-C fits within the Medical Physician Assistant landscape nationally.
40,580
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider
Nathaniel Retrum, PA-C's 2,225 claims are above the specialty average of 1,077.
Nearby Medical Physician Assistant Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Retrum.
Dr. Carmen Adams
PA
Sparta, WI
Dr. Darian Adler
PA-C
La Crosse, WI
Dr. Sarah Affeldt
PAC
Madison, WI
Dr. Susan Ahn-Horvath
PA
Marshfield, WI
Olukemi Ajibola
Mequon, WI
Compare Medical Physician Assistant nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Nathaniel Retrum, PA-C's specialty? ▼
Nathaniel Retrum, PA-C specializes in Medical Physician Assistant and practices in Antigo, Wisconsin. Credentials: PA-C.
How much does Nathaniel Retrum, PA-C prescribe under Medicare Part D? ▼
In 2023, Nathaniel Retrum, PA-C wrote 2,225 Medicare Part D claims totaling $193K in drug costs for 327 beneficiaries.
What is Nathaniel Retrum, PA-C's Medicare quality score? ▼
Nathaniel Retrum, PA-C has a CMS MIPS Final Score of 77/100 (Quality: 90.5, Cost: 25.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Nathaniel Retrum, PA-C located? ▼
Nathaniel Retrum, PA-C is located at 110 E 5TH AVE, Antigo, WI, 54409. Phone: (715) 623-2351.
What is Nathaniel Retrum, PA-C's NPI number? ▼
Nathaniel Retrum, PA-C's National Provider Identifier (NPI) is 1336548627, issued on 08/22/2014.
Does Nathaniel Retrum, PA-C prescribe more brand-name or generic drugs? ▼
Nathaniel Retrum, PA-C's prescribing is 9% brand-name and 90% generic drugs by claim count, with $152K in brand drug costs.
Does Nathaniel Retrum, PA-C prescribe opioids? ▼
Yes, Nathaniel Retrum, PA-C had 89 opioid claims in 2023 with an opioid prescribing rate of 4.0%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,580 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does Nathaniel Retrum, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Nathaniel Retrum, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nathaniel Retrum, PA-C accept Medicare? ▼
Nathaniel Retrum, PA-C appears in CMS Medicare data with 2,225 Part D claims and 327 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nathaniel Retrum, PA-C's credentials? ▼
Nathaniel Retrum, PA-C's NPI is 1336548627 with credentials PA-C. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.